Home / 3,018.30-4,528.11-938.28

Finding the Fourth Proportional to 3,018.30, 4,528.11 and 938.28

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Solution

The fourth proportional to 3,018.30, 4,528.11 and 938.28 is: 1,407.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.30 : 4,528.11 = 938.28 : x
  2. Step 2: Convert to fraction form
    3,018.30/4,528.11 = 938.28/x
  3. Step 3: Cross multiply
    3,018.30x = 4,528.11 × 938.28
  4. Step 4: Simplify right side
    3,018.30x = 4,248,635.05
  5. Step 5: Solve for x
    x = 4,248,635.05/3,018.30
  6. Step 6: Final answer
    x = 1,407.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.